221403304330 has 64 divisors (see below), whose sum is σ = 441089712000. Its totient is φ = 79483832064.

The previous prime is 221403304319. The next prime is 221403304337. The reversal of 221403304330 is 33403304122.

It is a junction number, because it is equal to n+sod(n) for n = 221403304295 and 221403304304.

It is not an unprimeable number, because it can be changed into a prime (221403304337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7194837 + ... + 7225543.

It is an arithmetic number, because the mean of its divisors is an integer number (6892026750).

Almost surely, 2^221403304330 is an apocalyptic number.

221403304330 is a deficient number, since it is larger than the sum of its proper divisors (219686407670).

221403304330 is a wasteful number, since it uses less digits than its factorization.

221403304330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32263.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 221403304330 its reverse (33403304122), we get a palindrome (254806608452).

The spelling of 221403304330 in words is "two hundred twenty-one billion, four hundred three million, three hundred four thousand, three hundred thirty".